akkoma/lib/pleroma/activity.ex

369 lines
10 KiB
Elixir

# Pleroma: A lightweight social networking server
# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
# SPDX-License-Identifier: AGPL-3.0-only
defmodule Pleroma.Activity do
use Ecto.Schema
alias Pleroma.Activity
alias Pleroma.Activity.Queries
alias Pleroma.Bookmark
alias Pleroma.Notification
alias Pleroma.Object
alias Pleroma.Repo
alias Pleroma.ReportNote
alias Pleroma.ThreadMute
alias Pleroma.User
alias Pleroma.Web.ActivityPub.ActivityPub
import Ecto.Changeset
import Ecto.Query
require Pleroma.Constants
@type t :: %__MODULE__{}
@type actor :: String.t()
@primary_key {:id, FlakeId.Ecto.CompatType, autogenerate: true}
schema "activities" do
field(:data, :map)
field(:local, :boolean, default: true)
field(:actor, :string)
field(:recipients, {:array, :string}, default: [])
field(:thread_muted?, :boolean, virtual: true)
# A field that can be used if you need to join some kind of other
# id to order / paginate this field by
field(:pagination_id, :string, virtual: true)
# This is a fake relation,
# do not use outside of with_preloaded_user_actor/with_joined_user_actor
has_one(:user_actor, User, on_delete: :nothing, foreign_key: :id)
# This is a fake relation, do not use outside of with_preloaded_bookmark/get_bookmark
has_one(:bookmark, Bookmark)
# This is a fake relation, do not use outside of with_preloaded_report_notes
has_many(:report_notes, ReportNote)
has_many(:notifications, Notification, on_delete: :delete_all)
# Attention: this is a fake relation, don't try to preload it blindly and expect it to work!
# The foreign key is embedded in a jsonb field.
#
# To use it, you probably want to do an inner join and a preload:
#
# ```
# |> join(:inner, [activity], o in Object,
# on: fragment("(?->>'id') = COALESCE((?)->'object'->> 'id', (?)->>'object')",
# o.data, activity.data, activity.data))
# |> preload([activity, object], [object: object])
# ```
#
# As a convenience, Activity.with_preloaded_object() sets up an inner join and preload for the
# typical case.
has_one(:object, Object, on_delete: :nothing, foreign_key: :id)
timestamps()
end
def with_joined_object(query, join_type \\ :inner) do
join(query, join_type, [activity], o in Object,
on:
fragment(
"(?->>'id') = COALESCE(?->'object'->>'id', ?->>'object')",
o.data,
activity.data,
activity.data
),
as: :object
)
end
def with_preloaded_object(query, join_type \\ :inner) do
query
|> has_named_binding?(:object)
|> if(do: query, else: with_joined_object(query, join_type))
|> preload([activity, object: object], object: object)
end
# Note: applies to fake activities (ActivityPub.Utils.get_notified_from_object/1 etc.)
def user_actor(%Activity{actor: nil}), do: nil
def user_actor(%Activity{} = activity) do
with %User{} <- activity.user_actor do
activity.user_actor
else
_ -> User.get_cached_by_ap_id(activity.actor)
end
end
def with_joined_user_actor(query, join_type \\ :inner) do
join(query, join_type, [activity], u in User,
on: u.ap_id == activity.actor,
as: :user_actor
)
end
def with_preloaded_user_actor(query, join_type \\ :inner) do
query
|> with_joined_user_actor(join_type)
|> preload([activity, user_actor: user_actor], user_actor: user_actor)
end
def with_preloaded_bookmark(query, %User{} = user) do
from([a] in query,
left_join: b in Bookmark,
on: b.user_id == ^user.id and b.activity_id == a.id,
preload: [bookmark: b]
)
end
def with_preloaded_bookmark(query, _), do: query
def with_preloaded_report_notes(query) do
from([a] in query,
left_join: r in ReportNote,
on: a.id == r.activity_id,
preload: [report_notes: r]
)
end
def with_preloaded_report_notes(query, _), do: query
def with_set_thread_muted_field(query, %User{} = user) do
from([a] in query,
left_join: tm in ThreadMute,
on: tm.user_id == ^user.id and tm.context == fragment("?->>'context'", a.data),
as: :thread_mute,
select: %Activity{a | thread_muted?: not is_nil(tm.id)}
)
end
def with_set_thread_muted_field(query, _), do: query
def get_by_ap_id(ap_id) do
ap_id
|> Queries.by_ap_id()
|> Repo.one()
end
def get_bookmark(%Activity{} = activity, %User{} = user) do
if Ecto.assoc_loaded?(activity.bookmark) do
activity.bookmark
else
Bookmark.get(user.id, activity.id)
end
end
def get_bookmark(_, _), do: nil
def get_report(activity_id) do
opts = %{
type: "Flag",
skip_preload: true,
preload_report_notes: true
}
ActivityPub.fetch_activities_query([], opts)
|> where(id: ^activity_id)
|> Repo.one()
end
def change(struct, params \\ %{}) do
struct
|> cast(params, [:data, :recipients])
|> validate_required([:data])
|> unique_constraint(:ap_id, name: :activities_unique_apid_index)
end
def get_by_ap_id_with_object(ap_id) do
ap_id
|> Queries.by_ap_id()
|> with_preloaded_object(:left)
|> Repo.one()
end
@spec get_by_id(String.t()) :: Activity.t() | nil
def get_by_id(id) do
case FlakeId.flake_id?(id) do
true ->
Activity
|> where([a], a.id == ^id)
|> restrict_deactivated_users()
|> Repo.one()
_ ->
nil
end
end
def get_by_id_with_object(id) do
Activity
|> where(id: ^id)
|> with_preloaded_object()
|> Repo.one()
end
def all_by_ids_with_object(ids) do
Activity
|> where([a], a.id in ^ids)
|> with_preloaded_object()
|> Repo.all()
end
@doc """
Accepts `ap_id` or list of `ap_id`.
Returns a query.
"""
@spec create_by_object_ap_id(String.t() | [String.t()]) :: Ecto.Queryable.t()
def create_by_object_ap_id(ap_id) do
ap_id
|> Queries.by_object_id()
|> Queries.by_type("Create")
end
def get_all_create_by_object_ap_id(ap_id) do
ap_id
|> create_by_object_ap_id()
|> Repo.all()
end
def get_create_by_object_ap_id(ap_id) when is_binary(ap_id) do
create_by_object_ap_id(ap_id)
|> restrict_deactivated_users()
|> Repo.one()
end
def get_create_by_object_ap_id(_), do: nil
@doc """
Accepts `ap_id` or list of `ap_id`.
Returns a query.
"""
@spec create_by_object_ap_id_with_object(String.t() | [String.t()]) :: Ecto.Queryable.t()
def create_by_object_ap_id_with_object(ap_id) do
ap_id
|> create_by_object_ap_id()
|> with_preloaded_object()
end
def get_create_by_object_ap_id_with_object(ap_id) when is_binary(ap_id) do
ap_id
|> create_by_object_ap_id_with_object()
|> Repo.one()
end
def get_create_by_object_ap_id_with_object(_), do: nil
defp get_in_reply_to_activity_from_object(%Object{data: %{"inReplyTo" => ap_id}}) do
get_create_by_object_ap_id_with_object(ap_id)
end
defp get_in_reply_to_activity_from_object(_), do: nil
def get_in_reply_to_activity(%Activity{} = activity) do
get_in_reply_to_activity_from_object(Object.normalize(activity))
end
def normalize(obj) when is_map(obj), do: get_by_ap_id_with_object(obj["id"])
def normalize(ap_id) when is_binary(ap_id), do: get_by_ap_id_with_object(ap_id)
def normalize(_), do: nil
def delete_all_by_object_ap_id(id) when is_binary(id) do
id
|> Queries.by_object_id()
|> Queries.exclude_type("Delete")
|> select([u], u)
|> Repo.delete_all()
|> elem(1)
|> Enum.find(fn
%{data: %{"type" => "Create", "object" => ap_id}} when is_binary(ap_id) -> ap_id == id
%{data: %{"type" => "Create", "object" => %{"id" => ap_id}}} -> ap_id == id
_ -> nil
end)
|> purge_web_resp_cache()
end
def delete_all_by_object_ap_id(_), do: nil
defp purge_web_resp_cache(%Activity{} = activity) do
%{path: path} = URI.parse(activity.data["id"])
Cachex.del(:web_resp_cache, path)
activity
end
defp purge_web_resp_cache(nil), do: nil
def follow_accepted?(
%Activity{data: %{"type" => "Follow", "object" => followed_ap_id}} = activity
) do
with %User{} = follower <- Activity.user_actor(activity),
%User{} = followed <- User.get_cached_by_ap_id(followed_ap_id) do
Pleroma.FollowingRelationship.following?(follower, followed)
else
_ -> false
end
end
def follow_accepted?(_), do: false
def all_by_actor_and_id(actor, status_ids \\ [])
def all_by_actor_and_id(_actor, []), do: []
def all_by_actor_and_id(actor, status_ids) do
Activity
|> where([s], s.id in ^status_ids)
|> where([s], s.actor == ^actor)
|> Repo.all()
end
def follow_requests_for_actor(%User{ap_id: ap_id}) do
ap_id
|> Queries.by_object_id()
|> Queries.by_type("Follow")
|> where([a], fragment("? ->> 'state' = 'pending'", a.data))
end
def following_requests_for_actor(%User{ap_id: ap_id}) do
Queries.by_type("Follow")
|> where([a], fragment("?->>'state' = 'pending'", a.data))
|> where([a], a.actor == ^ap_id)
|> Repo.all()
end
def restrict_deactivated_users(query) do
deactivated_users =
from(u in User.Query.build(%{deactivated: true}), select: u.ap_id)
|> Repo.all()
Activity.Queries.exclude_authors(query, deactivated_users)
end
defdelegate search(user, query, options \\ []), to: Pleroma.Activity.Search
def direct_conversation_id(activity, for_user) do
alias Pleroma.Conversation.Participation
with %{data: %{"context" => context}} when is_binary(context) <- activity,
%Pleroma.Conversation{} = conversation <- Pleroma.Conversation.get_for_ap_id(context),
%Participation{id: participation_id} <-
Participation.for_user_and_conversation(for_user, conversation) do
participation_id
else
_ -> nil
end
end
@spec pinned_by_actor?(Activity.t()) :: boolean()
def pinned_by_actor?(%Activity{} = activity) do
actor = user_actor(activity)
activity.id in actor.pinned_activities
end
def local_only?(activity) do
recipients = Enum.concat(activity.data["to"], Map.get(activity.data, "cc", []))
public = Pleroma.Constants.as_public()
local = Pleroma.Constants.as_local_public()
Enum.member?(recipients, local) and not Enum.member?(recipients, public)
end
end